Sewing-machine.



R. L. LYONS.

SEWING MACHINE.

APPLICATION FILED APR. 8. 1912.

1 1,160,423. Patented Nov. 16, 1915. I T' 47 J0 J/ 4.9 46 JLIIiI' III- fl IIIIIIII I 4.. |Ih 44 I gg |=5i f I vll/lllIIlll/lllll.

9.162, KQW.

ROBERT LQ LYONS,kr 02Ek WALTHAM, MASSACHUSETTS.

SEWING-MACHINE.

Specification of Letters Patent.

Patented Nov-ie, i915.

' Application 1edApriis,'1912. `seria1-No.es9,221.

To all whom, t may concern.'

lValtham, `in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in pSewing-Machines, of which the following is a specification, reference being had to the accompan yi ng drawings, forming part thereof.

This inventionhas yreference to improvements in sewing machines and particularlyrin button `sewing machines.

The main object of this'invention is to so construct a sewing machine that two`super`- posed buttons may be ksecured by sewing stitches, that the sewing threadinay `be fully described and pointed out in l the' claims.

Figure 1 represents a side elevation of a sewing machine, partially broken away and partially shown in section, illustrating the new invention, Fig. 2 represents end view of portions thereof partially in section as taken on line 2-2 Fig. 1. Fig. 3 represents a plan sectional view of the same as taken on line 3-3 Fig. 1. Fig. 4: represents a sec-- tional view of the product of this machine.

Similar numbers of reference designate corresponding parts throughout.

In carrying this invention into practice my main object has been to so construct a sewing machine that a button and a localized stay or strengthening member or device,`

preferably a second button, y'may be simultaneously attached by sewing stitches to an interposed fabric whereby the buttonis ,more effectually secured as the stay `prevents the stitches from being pulled through thefabric when the button ismanipulated toene gage and disengage the same 'from a button hole. In order to facilitate this operation it is essential to distinguish, as regards the broad aspects of the invention, from `the heretofore well 4known method ofsewingon buttons inV which a buttonl iS @Wn t ,the

button holding means is usually so related to .the fabric thatthe button can be readily adjusted and heldv with respect to the path of the needle that it is not material whether the relative vibratory movement of the but# ton and the stitch forming means, alternately to present theholes of the button in the path of the needleis accomplished by reason'fof the vibration of the vbutton orof the stitch forming means. V l In order to localize the stay, particularly when suchstay is formed by a button, it isessential that the stay and the button should be' positively placed and held with their thread kreceiving holes or perforatonsfin registry and that subsequent to such plac` ing of they buttons the fabric to which they are to, be sewnshould be inserted and sup-k ported therebetween. By reason of these essentialsI have found the ordinary vibra` tory button yclamp to be impractical "andy that the necessary duplex button holding and fabric supporting means should be sta#` tionary with respect tothe vibration of the stitch vforming devices. I find ralso that the placing and adjusting Vof the stay and the fabric are facilitated by the mechanism herein describedand that the stay and but-p tonvare more satisfactorily secured by tying a knot in the thread close to the stayand then parting the thread near or in said knot. In its preferred form I have illustrated this invention as applied yto a. single threadk sewing machine` of known construction which 5 indicates the base having the eXf' tension 6 and furnished with the frame'7 carrying the head 8 which has the guide' 9 for the slide rod 10 of the needle bar guide 11 in which. the needle bar 12 is vertically slidable, any usual mechanism being employed to effect the operation of the needle bar. Slide/rod 10 carried by the post 13 ofthe carriage 14 which is slidablein guides 15, 15 of the extension 6 and has dependingy fingers ras 16. Provision is made for effecting the vibration of "carriage 14 and vsuch vibration is transmitted by the fingers as 16,r tothe looper shaft 17 rotatably mounted in` said base extension 6 and havingthe collars Y 18 and 19, between which the fingers as 16 are engaged, and to the looper 20 andthe cellar 21 which latter is engagedin a groove of the slidable thread positioning plate 22 having the thread passage `23 vand of well outer surface of a fabric and in whichthe Be it known thatI, RonnrL. LYoNs, of

known construction. Provision is made fory driving the looper shaft 17 from the drive shaft 24 by means of the pinions 25 and 26.

, spring 32, the actuatingarm 33 and the col-V lar 34 in which is engaged the pin 35 which j ournaled in arms, extending from the base extension 6, and having the retracting is connected with the sliding jaw 30.

KPresserfoot rod 36 is slidably mounted inl the head 8 and has at its lower end a button holdingvclamp or device preferably having the arms 37, 37. Theupward movement of this rod 36 is eected byy means of the arm 38 of shaft 39 which latter is j ournaled in bearings provided on the frame 7 and is .Y furnished with the arms 40 and .41, the

thread pullerV arms 42 and 43and `the'cam 44, of which arm is connected with arm 33 of shaft 31 bythe chain 45 so that the initial rotative movement of shaft 39 is transmitted through said chain to eect a rotation of shaft 31 and through pin 35 to movev the stay holding jaw 30v in the releasing direction simultaneously with or slightly prior tothe upward movement of rod 36 and its button clamp.

On frame 7 are mounted the ordinary thread tension 46 the thread guides 47 and 48 and a thread clamping device comprisingV the fixed member 49 andthe post V50 carryt ing the lpivoted clamping member 51 which coperates with said member 49 and is actuated by the rod v52 slidable in guidesieXtending from the frame 7 and having the pin 53 bearing on and adapted to be lifted by cam 44 ofshaft 39 when said shaft is rotated by power applied to arm 41 thereofV through rod 54;

In preparing this improved machine for operation the thread T-T is passed through the tension 46 through guides 47 and 48, be-

tween the members 49 and 51 of the clamping device and ultimately to and through the eye of the needle N carried by the needle bar 12. The jaws 29 `and `30 are adjusted tov Y hold a stay, in the present instance the inverted button S, between them and resting on the throat plate 27 y, with its holesl above the throat 28 and located Vin the predeter-Y mined'paths assumed by theneedle in its lateral vibration; this placing of the stay S is eected when the button clamp ofY rod 36Y is inthe elevated position. The main 'buttonB is now kplaced between the arms 37 37 of the upper clamp and adjusted and the fabric'F` isplaced on the jaws 29 and 30, be-: f

neath the button B, whereby the upper surfacesof said jaws act as a fabric support. Rod 36V is now permitted to move downward until the button B carried by its clamp rests against theV fabric and, during such movement the jaw 30 completes its inward movement to engage and hold the stay S. Ther machine is now started and a vseries ofv .stitches is formed through the button B,

fabric F and'stay'S, and the lateral vibration'of the needle is prevented during two or more loop delivery movements .thereof whereby a series of vchain loops are formed and the machine isbrought to a stop with said chain loops drawn into a knot, sojcalled close to the face of the inverted stay S'.`r Rod 54 is now actuated to rotate' shaft 39 and results in the operation of thread' pullery arm 43 to drawl a vsupply of'thread through y Y tension'46, the lifting of rod 52 by cam 44 to clamp the thread between theclamping members 49 and 51', the actuation of thread puller arm 42 tov draw back rslack thread afterV such clampingA and the'actuation 'of shaft 31, through arms 33 and 40, and chain 45 tomove the stay holding jaw 30 in the releasing direction approximately simulta neously with the upward movement of rod 36 and its button clamp whereby strain' is vput on the-clamped thread, with theresult that said thread breaks in or-close to the knot formed at the face of stay S.,V A

While I have herein yillustrated myA invention as carried into operation bysimple'but practical mechanism it is not my intention to limit this invention to any vspecific fea-' tures of construction.

Having thus described my invention 1 claim as new and desire to receive by Patent. A

1. A button sewing machine comprising in combination a stay button clamp having a pair of vstay-engaging members' one of which is' adapted to be fixed and the other of which is movable, and a main button clamp movable at right angles to said stay. button clamp and having button holding arms.

2. A button sewing machine,k comprising in combination a stayfbuttonfclamp havingY a slidable member, a main button clamp movable with respect to said stay clamp, and means for 4moving said main clamp'and the slidable member of thefstay clamp ap proXimately simultaneously. y' Y 3. A button clamp comprising in combination a stay button clamp `having a pair of fiat holding members forming a fabricsupportof which one member is movable, means for moving said vmovable member in the releasing direction, a main button clamp mov.- ably mounted above saidstay clamp, and means for moving said main clamp. y f 4. The-combination with a throat plate, of ay ypairof holding jaws mounted above said plate, and a presser foot button clamp movably mounted above said jaws.

Letters 5. A button sewing machine comprising in combination a throat plate, a pair of button holding jaws, one of Which is movably mounted on said throat plate, `a vertically slidable rod, a button clamp carried by said rod, and means for moving said rod and said movable jaw approximatelysimultaneously.

6. A button sewing machine comprising in combination means for supporting two superposed buttons at the sides of an interposed fabric, stitch forming means, thread clamping means, and mechanism for releasing one of said button holding means and for moving the other button holding means to strain the thread.

7. A button sewing machine comprising in combination a throat plate, jaws mounted thereon, one of which is movable, a shaft rotatably mounted, means actuated by the rotation of said shaft for-'moving said movable jaw, a presser foot rod slidably mounted, a button clamp on said rod, and mechanism for moving said rod and approximately simultaneously therewith e'ecting the rotary movement of such shaft. y

8. A. button sewing machine comprising in combination, a releasable stay-holding means forming a fabric support, a button holding presser foot, mechanism for operating said stay holding means to release the stay and for operating said presser foot to thereafter break the thread.

ROBERT L. LYONS.

Witnesses:

C. F. Bon'r'r, HENRY J. MlLLER.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

